Link-block.



No. 727,732. PATENTED MAY 12,1903.

J. B. ARTHUR'G; A. 1). KARR.

LINK BLOCK.

APPLICATION FILED 001 .9. 1902.

N0 MODEL.

l mu

76M 756,172. Zarr. zww a, I

NITED STATES PATENT Patented May 12, 1903.

OFFICE.

JOHN E. ARTHUR, OF LANE, AND ALBERT D. KARR, OF CLINTON, ILLINOIS.

LINK-BLOCK.

SPECIFICATION forming part of Letters Patent No. 727,732, dated May 12,1903.

Application filed October 9, 1902. Serial No. 126,622. (No model.)

T0 at whom it may concern: I

Be it known that we, JOHN E. ARTHUR, of

Lane, and ALBERT D. KARR, of Clinton, in-

the county of Dewitt and State of Illinois, have invented anImprovedLink-Block, of which the following is a specification.

This invention is applicable to the linkmotion of a locomotive, torotary engines of the type described in Patent No. 699,740, granted toJohn E. Arthur May 13, 1902, and to any machine in which a shaft rotatesin a slidable bearing.

The object of the invention is to take up for wear in the shaft-boxingand the slidebearings at a single operation.

The invention is exemplified in the structure hereinafter described, andit is defined in the appended claim.

In the drawings forming part of this specification, Figure l is a planof one face of the link-block. Fig. 2 is an elevation of one edge of theblock. Fig. 3 is a plan of the face of the block opposite that shown inFig. 1. Fig. 4 is a section on line X in Fig. 3. Fig. 5 shows theinternal configuration of one of the slide-boxes. Fig. 6 shows theinternal con; figuration of one of the quarter-boxes. Fig.

7 is a detail of one of the wedges used to take up wear.

The device comprises a pair of quarterboxes concaved to embrace a shaftand provided with flanges 2, a pair of slide-boxes 3,

- having flanges 4, and a pair of wedges 8, havhave inclined surfaces 6in their ends, and

wedges 8 fit against inclines 6 and against the quarter-boxes. Stems 9of the wedges extend through flanges 2 of the quarter-boxes, and nuts 10on the threaded extensions of ter-boxes inward against the shaft andthe.

slide-boxes outward against the link or other slide bearing, the nuts 10are screwed onto stems 9 and the Wedges are drawn into the boxing. Thewedges 8 force the quarterboxes inward, and the wedge-shaped sides ofthe quarter-boxes act on the inclined surfaces of the slide-boxes tospread the slide boxes against the slide-bearings.

We claim-- A link-block consisting of apair of slideboxes the internalsurfaces whereof incline inward towardthe center of the boxes and forminward-presented apexes, a pair of quarter-boxes fitting inside theslide-boxes and having their sides wedge-shaped to conform to theinclined internal surfaces of the slideboxes, and a pair of wedgesplaced between broad surfaces of the quarter-boxes and internalsurfacesof conjoining ends of the slideboxes, and means for moving the wedges totighten the boxes, substantially as described.

In testimony whereof we sign our names in the presence of twosubscribing witnesses.

JOHN E. ARTHUR. A. D. KARR.

Witnesses:

L. C. BREITFELDER, J. W. MOPHERSON.

